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Daily use (maintenance) of filters Misunderstandings about filters
2023-08-15
Myth 1: A filter with a bypass valve cannot be cleaned or replaced for a long time after the filter element is clogged
Many users will think that the bypass valve of the filter and the system The safety valve has the same function: after the filter element is clogged, the bypass valve opens and the system oil passes through at full flow without affecting the system. This is a wrong understanding. When the bypass valve of the filter is opened, the pollutants (filtered pollution particles) blocked by the filter element will re-enter the system through the bypass valve. At this time, the pollution concentration of the local oil is high, which will have a negative impact on the hydraulic components. If the damage is serious, previous pollution control will be meaningless. Unless the system requires very high continuity of operation, choose a transition device without a bypass valve. Even if a filter with a bypass valve is selected, when the pollution in the filter blocks the signal from the transmitter, the filter element must be cleaned or replaced in time. This is the way to ensure the safe and reliable operation of the system.
Misunderstanding 2: Use the service life of the filter to judge the performance of the filter.
Many users use the filter because they do not have oil contamination detection equipment. Use the service life to judge the performance of the filter. The performance of the filter is judged by how quickly it clogs. Both of these concepts are one-sided. Because the filtration performance of the filter is mainly reflected by performance indicators such as filtration ratio, dirt holding capacity, and original pressure loss. Only under the same working conditions and ensuring the cleanliness requirements of the hydraulic system, the longer the service life, the better.
The correct selection and use of filters in the hydraulic system is the key to pollution control in the hydraulic system and a reliable guarantee for the safe operation of the system. In order to allow the system and components to have an ideal working life, it is necessary to control the contamination of the oil, configure reasonable filters of different types to achieve economical and reliable results, and perform good daily maintenance on the filters to ensure the safety and reliability of the system. run.
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